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Impact of Power Amplifier Nonlinearities in Multi-user Massive MIMO Downlink

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Impact of Power Amplifier Nonlinearities in Multi-user Massive MIMO Downlink. / Zou, Yaning; Raeesi, Orod; Anttila, Lauri; Hakkarainen, Aki; Vieira, Joao; Tufvesson, Fredrik; Cui, Qimei; Valkama, Mikko.

Proceedings of IEEE Global Communications Conference (IEEE GLOBECOM 2015). 2015.

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Harvard

Zou, Y, Raeesi, O, Anttila, L, Hakkarainen, A, Vieira, J, Tufvesson, F, Cui, Q & Valkama, M 2015, Impact of Power Amplifier Nonlinearities in Multi-user Massive MIMO Downlink. in Proceedings of IEEE Global Communications Conference (IEEE GLOBECOM 2015). IEEE Global Communications Conference, 1/01/00. https://doi.org/10.1109/GLOCOMW.2015.7414011

APA

Zou, Y., Raeesi, O., Anttila, L., Hakkarainen, A., Vieira, J., Tufvesson, F., ... Valkama, M. (2015). Impact of Power Amplifier Nonlinearities in Multi-user Massive MIMO Downlink. In Proceedings of IEEE Global Communications Conference (IEEE GLOBECOM 2015) https://doi.org/10.1109/GLOCOMW.2015.7414011

Vancouver

Zou Y, Raeesi O, Anttila L, Hakkarainen A, Vieira J, Tufvesson F et al. Impact of Power Amplifier Nonlinearities in Multi-user Massive MIMO Downlink. In Proceedings of IEEE Global Communications Conference (IEEE GLOBECOM 2015). 2015 https://doi.org/10.1109/GLOCOMW.2015.7414011

Author

Zou, Yaning ; Raeesi, Orod ; Anttila, Lauri ; Hakkarainen, Aki ; Vieira, Joao ; Tufvesson, Fredrik ; Cui, Qimei ; Valkama, Mikko. / Impact of Power Amplifier Nonlinearities in Multi-user Massive MIMO Downlink. Proceedings of IEEE Global Communications Conference (IEEE GLOBECOM 2015). 2015.

Bibtex - Download

@inproceedings{816fba8f846643609a423c5e9dcfae9a,
title = "Impact of Power Amplifier Nonlinearities in Multi-user Massive MIMO Downlink",
abstract = "In this paper, we investigate the impact of power amplifier (PA) nonlinear distortion in pre-coded multi-user large antenna or massive MIMO downlink systems. First, detailed signal and sys-tem models are derived for the received signal at single-antenna user equipment (UE) under channel-aware linear precoding in the base-station combined with behavioral models for the individ-ual PA units, covering both single-carrier and multi-carrier modulation schemes. Based on the derived models, it is shown that the PA induced nonlinear distortion can also combine coherently in the channel, depending on the relative differences between the phase characteristics of the different PA units and the corresponding distortion terms. Furthermore, it is also shown that the impact of nonlinear PAs and the resulting linear and nonlinear multi-user interference, quantified in terms of the received signal-to- interference-plus-noise ratio (SINR), is largely dependent on the effective or observable linear gain in the UE receiver demodulation stage. By observing only the instantaneous direct linear gain, the PA induced nonlinear distortion has a substantial impact on the effective SINR, even if very large number of TX antennas is adopted relative to the number of spatially multiplexed UEs. On the other hand, if the statistically averaged linear gain can be observed, the impact of nonlinear PAs is far less severe. These findings give thus new insight, not only to the core impact of nonlinear PAs in massive MIMO systems but also to the downlink reference signal design, radio frame design and radio resource management in time, in order to facilitate the estimation of the statistically averaged linear gains in the receivers within the scheduled transmission and processing blocks.",
author = "Yaning Zou and Orod Raeesi and Lauri Anttila and Aki Hakkarainen and Joao Vieira and Fredrik Tufvesson and Qimei Cui and Mikko Valkama",
year = "2015",
month = "12",
doi = "10.1109/GLOCOMW.2015.7414011",
language = "English",
isbn = "9781467395267",
booktitle = "Proceedings of IEEE Global Communications Conference (IEEE GLOBECOM 2015)",

}

RIS (suitable for import to EndNote) - Download

TY - GEN

T1 - Impact of Power Amplifier Nonlinearities in Multi-user Massive MIMO Downlink

AU - Zou, Yaning

AU - Raeesi, Orod

AU - Anttila, Lauri

AU - Hakkarainen, Aki

AU - Vieira, Joao

AU - Tufvesson, Fredrik

AU - Cui, Qimei

AU - Valkama, Mikko

PY - 2015/12

Y1 - 2015/12

N2 - In this paper, we investigate the impact of power amplifier (PA) nonlinear distortion in pre-coded multi-user large antenna or massive MIMO downlink systems. First, detailed signal and sys-tem models are derived for the received signal at single-antenna user equipment (UE) under channel-aware linear precoding in the base-station combined with behavioral models for the individ-ual PA units, covering both single-carrier and multi-carrier modulation schemes. Based on the derived models, it is shown that the PA induced nonlinear distortion can also combine coherently in the channel, depending on the relative differences between the phase characteristics of the different PA units and the corresponding distortion terms. Furthermore, it is also shown that the impact of nonlinear PAs and the resulting linear and nonlinear multi-user interference, quantified in terms of the received signal-to- interference-plus-noise ratio (SINR), is largely dependent on the effective or observable linear gain in the UE receiver demodulation stage. By observing only the instantaneous direct linear gain, the PA induced nonlinear distortion has a substantial impact on the effective SINR, even if very large number of TX antennas is adopted relative to the number of spatially multiplexed UEs. On the other hand, if the statistically averaged linear gain can be observed, the impact of nonlinear PAs is far less severe. These findings give thus new insight, not only to the core impact of nonlinear PAs in massive MIMO systems but also to the downlink reference signal design, radio frame design and radio resource management in time, in order to facilitate the estimation of the statistically averaged linear gains in the receivers within the scheduled transmission and processing blocks.

AB - In this paper, we investigate the impact of power amplifier (PA) nonlinear distortion in pre-coded multi-user large antenna or massive MIMO downlink systems. First, detailed signal and sys-tem models are derived for the received signal at single-antenna user equipment (UE) under channel-aware linear precoding in the base-station combined with behavioral models for the individ-ual PA units, covering both single-carrier and multi-carrier modulation schemes. Based on the derived models, it is shown that the PA induced nonlinear distortion can also combine coherently in the channel, depending on the relative differences between the phase characteristics of the different PA units and the corresponding distortion terms. Furthermore, it is also shown that the impact of nonlinear PAs and the resulting linear and nonlinear multi-user interference, quantified in terms of the received signal-to- interference-plus-noise ratio (SINR), is largely dependent on the effective or observable linear gain in the UE receiver demodulation stage. By observing only the instantaneous direct linear gain, the PA induced nonlinear distortion has a substantial impact on the effective SINR, even if very large number of TX antennas is adopted relative to the number of spatially multiplexed UEs. On the other hand, if the statistically averaged linear gain can be observed, the impact of nonlinear PAs is far less severe. These findings give thus new insight, not only to the core impact of nonlinear PAs in massive MIMO systems but also to the downlink reference signal design, radio frame design and radio resource management in time, in order to facilitate the estimation of the statistically averaged linear gains in the receivers within the scheduled transmission and processing blocks.

UR - http://globecom2015.ieee-globecom.org/

U2 - 10.1109/GLOCOMW.2015.7414011

DO - 10.1109/GLOCOMW.2015.7414011

M3 - Conference contribution

SN - 9781467395267

BT - Proceedings of IEEE Global Communications Conference (IEEE GLOBECOM 2015)

ER -